Container/Tube: Serum or plasma/SST or lithium heparin
Specimen Volume: 3.5mL or 5 mL
Transport: Refrigerated
Collections Instructions: Centrifuge specimens and remove the serum or plasma from the cellular material within 4 hours of collection.
Stability
| Storage | Temperature | Stability |
| Room Temperature | 18-28 °C (64-82 °F) | ≤ 1 day |
| Refrigerated | 2-8 °C (36-46 °F) | ≤ 5 days |
| Frozen | ≤ Negative 18 °C (≤0 °F) | ≤ 30 days |
Colorimetric
Males: 9-20 mg/dL
Females: 7-17 mg/dL
Critical value (automatic call-back): >80 mg/dL
Monday through Sunday
Available STAT
84520